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Günterblassite

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Formula:
(K,Ca,Ba)
 
2
(Fe,Ca,Mg,Na)[(Si,Al)
 
13
O
 
25
(OH)
 
4
] · 7H
 
2
O ·
Also given as (K,Ca,Ba,Na,◻)3Fe[(Si,Al)13O25(OH,O)4].7H2O
Name:Named after Günter Blass, amateur mineralogist from Germany, who has studied minerals from the Eifel area in detail.


Related to umbrianite and hillesheimite.

Classification of Günterblassite

IMA status:Approved 2011
mindat.org URL:http://www.mindat.org/min-41771.html
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Type Occurrence of Günterblassite

Type Locality:Rother Kopf, Roth, Gerolstein, Eifel, Rhineland-Palatinate, Germany

Chemical Properties of Günterblassite

Formula:
(K,Ca,Ba)
 
2
(Fe,Ca,Mg,Na)[(Si,Al)
 
13
O
 
25
(OH)
 
4
] · 7H
 
2
O ·


Also given as (K,Ca,Ba,Na,◻)3Fe[(Si,Al)13O25(OH,O)4].7H2O
Simplified for copy/paste:(K,Ca,Ba)2(Fe,Ca,Mg,Na)[(Si,Al)13O25(OH)4]·7H2
Essential elements:Fe, H, K, O, Si
All elements listed in formula:Al, Ba, Ca, Fe, H, K, Mg, Na, O, Si

Other Names for Günterblassite

Synonyms:
IMA2011-032
Other Languages:

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Günterblassite

Reference List:

- +
Chukanov, N.V., Rastsvetaeva, R.K., Aksenov, S.M., Pekov, I.V., Zubkova, N.V., Britvin, S.N., Belakovskiy, D.I., Schueller, W., Ternes, B. (2012): Günterblassite, (K,Ca)3−xFe[(Si,Al)13O25(OH,O)4] • 7H2O, a new mineral: the first phyllosilicate with triple tetrahedral layer. Geology of Ore Deposits 54, 656-662.

Rastsvetaeva, R.K., Aksenova, S.M., Chukanov, N.V. (2012): Crystal structure of günterblassite, a new mineral with a triple tetrahedral layer. Doklady Chemistry, 442, 57-62.

Internet Links for Günterblassite

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  • Raman and XRD data at RRUFF project
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  • Localities for Günterblassite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Germany
     
    • Rhineland-Palatinate
      • Eifel
        • Gerolstein
          • Roth
    Rastsvetaeva, R.K., Aksenova, S.M., Chukanov, N.V. (2012): Crystal structure of günterblassite, a new mineral with a triple tetrahedral layer. Doklady Chemistry, 442, 57-62; Chukanov, N.V., Rastsvetaeva, R.K., Aksenov, S.M., Pekov, I.V., Zubkova, N.V., Britvin, S.N., Belakovskiy, D.I., Schueller, W., Ternes, B. (2012): Günterblassite, (K,Ca)3−xFe[(Si,Al)13O25(OH,O)4] • 7H2O, a new mineral: the first phyllosilicate with triple tetrahedral layer. Geology of Ore Deposits 54, 656-662. ; Blaß, G. & Schüller, W. (2012): Der Rother Kopf in der Vulkaneifel. Lapis, 37 (3), 20-29.
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